J No. 14 was an excellent B&B. It is located approximately 8 minutes walk from the nearest BTS (Sky Train station). The owners provided detailed directions from the airport that were easy to follow. The building is truly a diamond in the rough. You can tell that much time, energy, and skill went into crafting an excellent setting and ambiance.
My room was very adequate in size; however, as others have mentioned, my first floor room was a little loud due to little insulation. The shower was hot and everything else you'd expect was provided.
I only ate breakfast one morning, but it was a nice time with an egg scramble, fruit, and coffee provided. I talked with some other interesting guests. Also, The hosts were able to provide a city map and point out the most interesting sites in the city.
Overall, it was a great experience and I would stay there again.